Decorative cuts and sandblasted
patterns achieved with stencils can enhance the appearance
of stained surfaces. Timing of these operations, though,
depends on the desired effect. When you want the overall
stain finish to be as evenly colored as possible,
cut lines and patterns after staining is complete.
Stains penetrate differently around indentations.
If there is to be a color change at a pattern line,
cut the line first to form a barrier to stain movement.
If sawed joints are to be grouted, complete the staining
and sealing before grouting to help prevent grout
accumulation on the unprotected stain.
are generally laid out with pencil or chalk. Mark
only where you cut, and don’t use chalk colors
that are difficult to remove, or adhere lines to the
concrete surface using clear fixative sprays. Many
tools are available for cutting pattern lines in concrete.
Most installers use grinders or hand-held saws with
tables that ride against guides. Dry-cutting diamond
blades that do minimum damage to the edge of the cut
are a good choice. Dust-collection devices that attach
to grinders and saws capture almost all of the dust.
A 1 1 /2 -inch extruded aluminum "L" angle,
available in most hardware stores, makes a good saw
If you cut patterns before staining, cut them just
before cleaning the surface in preparation for the
stain. Sawing dust contains free lime that can adhere
to the surface, causing color distortion. If you cut
after staining, do it after the first coat of sealer
has been applied.
effects also can be achieved by applying stencils
to surfaces after staining and then sandblasting to
reveal plain or colored concrete in areas not covered
by the stencils. These stencils are usually made from
plastic materials and have adhesive backings that
stick to the floor surface. One coat of sealer is
recommended before sandblasting to improve stencil
continue – Stain Application